Tire machine



May 27, 1924. 1,495,237

. J. c. ALLEN TIRE MACHINE Filed Aug. 16 1919 2 SheetsSheet 1 May 27,1924..

1,495,237 J. C. ALLEN TIRE MACHINE Fi ld Aug. 1 1919 2 Sheets-Sheet. 2

OFFICE.

'J'OHN C. ALLEN, OF MERIDIAN, MISSISSIPPI, ASSIGNOR T0 EGOODYEAR TIRE &;RUBBER GOMPANY, OF AKRON, OHIO, A. OORORATION OF OHIO.

TIRE MACHINE.

Application filed August 16, 1919. Serial No. 817,9t6.

To all whom it may concern:

Be it known that I, JOHN CIALLEN, a citizen of the United States, andresident of Meridian, Mississippi, have invented new and usefulImprovements in Tire Machines, of which the following is aspecification,

The present invention relates to tire building machines, and moreparticularly to machines for building the fabric carcasses of tires ofthe pneumatic type.

The many objects and advantages of my improved mechanism will beapparent from a perusal of the drawings and specification together withthe appended claims.

In the drawingsywherein there has been illustrated a preferredembodiment of the invention and throughout the several views of which,similar reference numbers designate corresponding parts:

buil g machine;

Figure 2 is a side elevational view of the fabric-shaping mechanismmounting;

Figure 3 is a perspective detail of the cam operating mechanism.

Fig. is a top plan view illustrating, 11') full lines, the osition ofthe parts at the beginning of t e stitching operation, and in dottedlines, an intermediate position of the mechanism; and

Fig. 5 is a similar view illustrating, in full lines, the position ofthe parts when the stitching operation is completed, and, in dottedlines, the position in which the mechanism is adjusted before the carrie is actuated to' return the parts to their starting position.

The t e of tire building machine conventionai l y illustrated is thatmore largely used commercially but I desire it, of course, to beunderstood that my improved fabric shapers and mounting maybe applied toany suitable type of tire machine which embodies the essential elementsof a driven core and a fabric shaping mechanism.

In this instance the core, designated by the numeral 10, is removablymounted upon a rotatable shaft 10, which is driven by sprocket and chainconnections 1O from a motor 10. A base 11 is provided and serves as asupport for a reciprocating carriage 12, which is actuated, from themotor 10, by means of the chain drive 10 and an auxiliary shaft 10. Asshown in Fig. 2, the carriaw is provided with" a rack 12,

Figure 1 is a top plan view of the tire' which meshes with a pinion 12that is fixed upon a shaft 12. The shaft 12 is journalled in the support11 and is driven from the auxiliary shaft 10 by sprocket and chainconnections 12.. Any suitable type of speed control and reversinmechanism may be utilized for control ing the movement of the carriage,such, for instance, as that indicated generally at 12 Upon the forwardend of the carriage is pivotably mounted a pair of fabric-shapersupporting arms 13 to the free ends of which are mounted upon axles 15,fabric shaping discs 14. The arms 13 are pivoted to the carriage attheir ap roximate middle by bolts or pins 16. ounted above the arms 13,and in correct relation therewith, is a cam plate 17 which has cutthrough its body portion three slots 18, 19 and 20. The slots 18 and 20are cut at a slight angle to the main axis of the plate and receivetherein shoulder bolts 21 carried by the rear ends of the arms 13. Thecenter slot 19 is cut parallel to the main axis of the plate andoperates on a stud cam to retain the same against displacement.

A weight 23 secured to one end of a cable 24 which is passed over asheave wheel or pulley 25 mounted upon the base 25', or at any suitableplace free of the carriage and is fastened to an arm 26 mounted intherear end of the cam plate 17. To prevent side movement of the cam platethe arm 26 is preferably projected through an eye bolt 28 or any othersuitable bearing device, which is supported by'the carriage head 12.Thus it will be seen that the cam plate 17 is mounted in a floatingmanner, which permits a very flexible movement of the fabric shaper arms13.

Operation.

plate 17, which is held in its rearmost position by the weight 23. Asthe carriage is caused to advance toward the core and the fabric shapingelements contact therewith, the supporting arms 13 are swung about thepivot 16 and the cam plate 17 is advanced during such action by means ofthe bolts 21 acting against the inner walls of the inclined slots. 18and 20. Until the fabric shaping discs reach the position shown indotted lines in Fig. 4, the cam plate 17 moves faster than the carriage12, as will be obvious. inasmuch as it moves forward with the carriage12, and an additional forward movement is imparted thereto by the actionof the arms 13 as the fabric working elements travel around the core. Asthe carriage continues in its forward movement from the position shownin dotted lines in Fig. 4:, obviously, a reverse movement is imparted tothe arms 13, and the cam plate 17 is moved rearwardly with relation tothe arms. At the same time the cam is being carried forward by thecarriage 12 through the action of the weight 23. lit will be noted thatthroughout the stitching operation a pressure is exerted upon the fabricas the weight 23 constantly retards the movement of the cam 17 in itsforward travel, and causes the arms 13 at all times to move against aforce which aflects a yielding resistance to such. movement.

In order to withdraw the carriage and stitchers from the position shownin full lines in F ig. 5 to repeat the foregoing operation, the operatormay move the cam 1? forward by means of the arm 26, and the fabricWorking elements will be separated, as shown in dotted lines in thisfigure. The carriage drive gmay now be reversed by means of thepreviously described mechanism 12 to retract the fabric working elementsand return the parts to their starting position.

lt'will be evident that various pressures upon the fabric may -'beattained through the use of diflerent weights and different arrangementsof the slots 18 and 201', and the arms 13.

What ll claim is:

1. The combination with a tire building machine including a rotatablecore, a re ciprocable carriage, and a pair of stitcher elements forworking fabric upon the core, of stitcher mountings upon the carriageadapted for relative movement to adjust the stitchers transversely ofthe core, and cam means actuated throu h such movement of the stitchersto yiel lngly resist relative movement of the mountings.

2. The combination with a tire building machine including a rotatablecore, a reciprocable carria e, and a pair of stitcher elements for wor'ng fabric upon the core, of mountings upon the carriage adapted emes?for relative movement to adjust the stitchers transversely of the core,and a floatin cam connecting the mountin s and actuate 1. through suchmovement 0 the stitchers to yieldingly resist relative movement 0 themountings.

3. The combination with a tire building machine including a rotatablecore, a reciprocable carriage, and a pair of stitcher elements forworking fabric upon the core, of stitcher mountings upon the carriageadapted for relative movement to adjust the stitchers transversely ofthe core, a sliding cam. actuated through such movement of the stitchersto yieldingly resist relative movement of the mountings, and means fornormally urging the cam in one direction.

t. A tire building machine including a rotatable core, means for drivingsaid core, a carriage, means for driving said carriage, fabric shapingelements mounted upon said carriage, a floating cam carried by saidcarriage, and means for normally urging the cam in one direction.

5. A tire building machine including a rotatable core, a support forsaid core, means for driving said core, a standard juxtaposed to thecore, a carriage slidably mounted upon the said standard, means fordriving the said carriage, fabric shaping elements mounted upon saidcarriage, a floating cam carried by said carriage and flexibly connectedtot said fabric shaping elements, and means for normally urging the camin one direction.

6. A. tire building machine including a rotatable core, a support forsaid core, means for driving said core, a standard juxtaposed to thecore, a carriage slidably mounted upon .the said standard, means fordriving the said carriage, fabric shaper arms pivotably mounted uponsaid carriage and supporting at their outer extremities in a revolublemanner fabric shaping discs, a cam slidably mounted upon said carriage,said cam having out through its body portion a plurality of, slots forflexible en'- gagement with the inner extremities of the said fabricshaper arms, and means connected to said cam but mounted independentlyof said carriage whereby said cam is normally urged in one direction.

7. A tire building machine including a rotatable core, a support forsaid core, means for driving said core, a standard juxtaposed to thecore, a carriage slidably mounted upon the said standard, means fordriving the said carriage, fabric shaper arms pivotably mounted uponsaid carriage and supporting at their outer extremities in a revolublemanner fabric shaping discs, a cam slidably mounted upon the carriage,said cam having cut through its body portion a plurality of slots forflexible engagement with the inner extremities of the said fit) did

fabric shaper arms, a. cable connected to the cam and arranged over apulley supported independently of the carriage and a weight secured tothe cable whereby said cam is normally urged in one direction.

8. The combination with a tire building machine including a rotatablecore, a reciprocable carria e,v and a pair of stitcher elements for wor'ng fabric upon the core, of stitcher mountings pivoted upon thecarriage for relative movement to adjust the stitchers transversely ofthe core, and a cam slidably mounted uponthe carriage and actuatedthrough such movement of the stitchers to yieldingly resist relativemovement of the mountings.

9., The combination with atire building machine including a rotatablecore, a' reciprocable carriage, and a pair of stitcherelements forworking fabric upon the core, of stitcher mountings pivoted upon thecarriage for relative movement to adjust the stltchers transversely ofthe core, a cam slidably mounted upon the carriage and actuated throughsuch movement of the stitchers to yieldinglyiresist relative movement ofthe mountings,; and means for guiding the cam in its movement.

10. The combination with a tire building machine including a rotatablecore, a reciprocable carriage and a pair of stitcher elements for wor'ng fabric upon the core, of stitchermountings pivoted upon the carriagefor relative movement to adjust the stitchers transversely of the core,a cam slidably mounted upon the carriage and actuated through suchmovement of the stitchers to yieldingly resist relative movement of themountings, means for guiding the cam in operation, and means fornormally urging the cam in one direction.

scribing witnesses. C i

OHN ALLEN.

Witnesses:

J, H. SEMMEB- In witness 'whieof, -I have hereunto signed my name in thepresence of two sub-

